David L. Farrington

Person

Boxborough, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Dual exposure photographic apparatus and method
- Patent number 5,943,511
- Issue date Aug 24, 1999
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for controlling exposure
- Patent number 5,794,076
- Issue date Aug 11, 1998
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Supplemental lens positioning system for a fixed focus lens camera
- Patent number 5,189,464
- Issue date Feb 23, 1993
- Polaroid Corporation
- David L. Farrington
- G02 - OPTICS
Information Patent Grant
Method and apparatus for compensating for shutter speed variations
- Patent number 5,014,082
- Issue date May 7, 1991
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Open-loop stepper motor controlled shutter
- Patent number 4,978,991
- Issue date Dec 18, 1990
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Single integrator system with dual photocells
- Patent number 4,941,011
- Issue date Jul 10, 1990
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Preflash pseudofocus/exposure control system
- Patent number 4,894,678
- Issue date Jan 16, 1990
- Polaroid Corporation
- David L. Farrington
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

David L. Farrington

Person

Patents Grantslast 30 patents

Dual exposure photographic apparatus and method

Method and apparatus for controlling exposure

Supplemental lens positioning system for a fixed focus lens camera

Method and apparatus for compensating for shutter speed variations

Open-loop stepper motor controlled shutter

Single integrator system with dual photocells

Preflash pseudofocus/exposure control system